Variation of Temperature Step 2: Measure the Reaction Rate at ≈ 20°C (Room Temperature)
Step 3: Measure the Reaction Rate at ≈ 40°C
Step 4: Repeat Step 2, heating the water to Measure the Reaction Rate at ≈ 65°C
Step 5: Measure the Reaction Rate at ≈ 5°C

Variation of Particle Size
Step 6: Measure the Reaction Rate for a Full Tablet
Step 7: Measure the Reaction Rate for a Partially Broken Tablet
Step 8: Measure the Reaction Rate for a Crushed Tablet